Anything can happen in the world of MMA. Champions fall, and new contenders emerge on a regular basis.
This is especially true in the heavyweight division, where any fighter can forever change his future with a single strike.
Every once in a while, we at Bleacher Report MMA like to whip out our crystal ball and take a look into the future. How will scheduled fights go down? What bouts are likely to be booked as a result?
After considering everything on the books and several variables that aren't, here is a look at where the UFC heavyweight rankings will stand at the end of 2013.